Used Screw Conveyors
Screw conveyors transport bulk materials using a rotating helical flight (auger) within a tube or trough. The screw's rotation moves dry, moist, and viscous materials horizontally, at an incline, or vertically, while providing controlled feed rates and material containment.
Federal Equipment Company stocks screw conveyors from 3" to 27" diameter with lengths up to 40’. Available configurations include tubular enclosed designs, open trough systems, inclined units with discharge heights to 21’, and vertical conveyors. Stainless steel and carbon steel construction options address sanitary and general industrial requirements, with motor drives from 1 HP to 50 HP.
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Screw Conveyor Types and Construction
Screw conveyors handle a wide range of bulk materials from free-flowing powders to sticky pastes. Tubular designs fully enclose the screw within a cylindrical housing, providing dust containment and preventing material contamination. Trough-style conveyors feature a U-shaped channel with a cover, allowing easy access for cleaning and inspection. Flight pitch—the distance between screw rotations—varies from 2" to 15" to optimize throughput for different material characteristics.
Federal Equipment Company carries screw conveyors from S. Howes, APV, National Bulk Equipment, Anderson Dahlen, Spaans, KWS, and Spiroflow. Inventory includes standard horizontal units, inclined systems for elevation changes, vertical conveyors for space-constrained installations, and twin-screw designs for mixing applications. All equipment can be inspected and tested at our Cleveland facility.
Applications & Industries
- Powder and granule transfer in pharmaceutical manufacturing
- Ingredient conveying in food and beverage processing
- Resin and additive feeding in plastics compounding
- Bulk chemical handling in chemical processing plants
- Discharge conveying from hoppers, silos, and bulk bag unloaders
- Metered feeding to mixers, extruders, and packaging equipment
Specifications & Configurations
Screw conveyors in stock range from 3" to 27" diameter with lengths from 6’ to 40’. Tubular designs comprise approximately 20% of inventory, while trough configurations make up the majority. Flight pitch ranges from 2" to 15" depending on material characteristics and throughput requirements. Discharge heights on inclined units reach up to 21’, while vertical conveyors extend to 36’ in height.
Materials of construction include 304 and 316 stainless steel for sanitary applications and carbon steel for general industrial use. Drive systems range from 1 HP to 50 HP, with standard 230/460-volt motors and gearbox reducers. Configurations include single-screw standard designs, twin-screw systems for mixing and conditioning, flexible screw conveyors with polyethylene tubes, and portable units with integrated hoppers and casters.
Why Buy Used Screw Conveyors
Used screw conveyors from Federal Equipment Company typically cost 40-60% less than new equipment while delivering equivalent performance. Lead times are measured in days rather than the weeks required for new fabrication, enabling faster project completion and production line modifications.
Federal Equipment Company offers inspection services at our facility, where buyers can verify screw and trough condition, test drive systems, and confirm dimensional specifications. Flight replacement and motor upgrades are available for units requiring refurbishment. Our technical staff can assist with screw conveyor selection based on your material characteristics, throughput requirements, and installation constraints.
